Improvement in furnace smoke-consumers



B, H. DEAR.

l Improvement n-Furnace Smoke-ConsumersAIA :y N@ 128,213, Patented :u-ne25,1872.

WQZ//f l UNITED STATES PATENT OEEICE.

BARTON H. DEAR, OF DES MOINES, IOWA.

IMPROVEMENT IN FURNACE SMOKE-CONSUMERS.

Specication forming part of Letters Patent No. 128,213, dated June 25,1872A; antedatcd June l5, 1872.

SPECIFICATION.

I, BARTON H. DEAR, of Des Moines, in the county of Polk and State ofIowa, have invented a Self-Operating Smoke-Consumer for Furnaces, ofwhich the following is a specification:

My invention is a self-operating smokeconsumer for all kinds offurnaces. It consists in laying one or more conducting and distributingpipes underneath the boiler in such va manner that the pipe or pipeswill conduct hot Aair and distribute it in the fire and smoke, and aidin the burning and consumption of all the gaseous and combustiblematerial that would otherwise be carried off and wasted.

The drawing is a perspective view, showing three pipes passing from thefront to the rear of the furnace and boiler, and then bending upward andreturning forward again, as hereinafter described.

A A is theboiler, which may vary in dimensions. Part of the front andlower end is cut away to show the distributing-pipes. B B represent twoconducting-pipes starting neai` the bottom of the wall at the rear endofthe ash-chamber, under the grate-bars, and passing backward throughthe bridge-wall to the rear end of the furnace, where they are turnedupward and forward and connected with distributing-pipes. These pipesmay be four or fiveV inches in diameter, or may vary in size as desired,and may be contracted as they approach the distributing-pipes b b. b bare the distributing-pipes returning forward. They aresmaller indiameter than the conductingpipes, and may also vary in size as desired.They are inclined upward, and at the front end they are about fourinches from the bottom of the boiler. The distance from the Athe pipes bb, and extends across from one to the other. Its distance from the fueland regrate, and also from the bottom of the boiler, may be varied. Itis perforated on its top,

and from these openings the hot air escapes and mingles with the smokeand soot and gas. The air, when it rst enters the conductingf pipes, isheated to a certain degree by the iire ward toward the furnace-fire.They are perforated like the pipe D. No smoke or soot or gas can passover these V-shaped pipes without coming in contact with the hot airescaping from them. One or more of these may be n used, and theirdistances from the furnacefire and from each other may vary. The dottedlines indicate how they may be made in a curved form to perform the samefunction; or they may be straight. Air-chambers are provided at thefront and rear ends of my distributing-pipes such as are in common usein furnaces..- Movable covers or dampers may be placed over or in theends of the conducting-pipes B B and O in such a manner that the pipesmay be partly or altogether closed wheneverdesired.

I am aware that various modes of conducting hot air for similar purposeshave been in use. I claim, however, that my manner of layingself-operating pipes underneath the boiler, as set forth, to be new andeconomical, and greatly advantageous.

Claim.

I claim as my inventionv l A smoke-consumer for furnaces, composed ofthe conducting-pipes B B and O, the pipes b b and c, thedistributing-pipe D,.and the V- shaped pipes H H or their equivalents,applied and operated substantially as described.

BARTON H. DEAR.

Witnesses:

Trros. HATToN, J r., TYLER SCovILLE.

